Device for wiping the printing-surfaces of intaglio-printing presses.



v K, RUGER. DEVICE FOR WIPING THE PRINTING SURFACES 0F INTAGLIO PRINTINGPRESSESQ APPLICATION FILED MAR 28,1914. 7

Patented July 7, 1914.

saafrns PATENT onnron KARL R iGrEE, "OF BERLIN, GERMANY, ASSIGNOR TOLINOTYIE END MACHINERY LIMITED, F LUNDON, ENGLAND.

DEVICE FUR UBING TEE PRINTING-SURFACES OF IXTAGLIO-PRINTING PRESS ES.

Application filed March 28, 1914. Serial No. 827,798.

Q'h all whom it r iag concern lle it known that I, KARL Rouse, a subjectof the German nperor, residing at 33 Teltoicrstrasse, P in, in theEmpire of Germany, have in ited new and. useful Im- I'Dl'GVQIREXllS inll, vices for Wiping the Printing-Surl aces of lntaglio-PrintingPresses, of which the following is a specification.

This invention relates to devices for wipe printing surfaces of intaglioprinting 1: a8: and. has for its object to provide a novel constructionof wiper which is capable in? being adjusted so that. i can exertgreater or less pressure upon the surface to be wiped.

The invention will be best understood by reference to the accompanyingdrawings in which l ig'ure 1 is a diagrammatic cross sectionlliroughphrt of a printing press provided with one form of the improvedwiper; Fig. '32 a horizontal section taken substantially on the line2-t2of l, and. Figsfi to 7 .inclu e, are diagrammatic cross secs eectively different forms ofthe improves wiper.

Throughout the several figures of the drawing, like reference numeralsindicate like parts.

in the arrangement shown in Fig. 1, 1 is the form or plate cylinder, 2the intaglio printing plate or surface thereon, 3 a trough containingthe inlr tin which the cylinder 1 rotates so that the intaglio surfacepicks up the desired quantity of inlz.

5 is impression cylinder formed of, or clothed with, a suitableresilient material, and between which and-the form cylinder 1, the web'7 is p sell to receive the impressions from the p i which sewe te guidethe web do of the impression cylinder 5, 9 is pressure cylinder inperipheral contact with the impression c1 linder 5.

1!) is the impro ed. wiper which, in the construction now under review,ccnsists of a frame ll of approximately semi-cylindrical irmn, integralwith disk-shaped ends by u hich it is mounted, with a capacity for an-.,crular adjustment, on a non-rotatable shaft 13. Each of the ends 12 isprovided with l s: m rigidly secured .at its inner end in a a Til whichis fast on the shaft Specification of Letters Patent.

arc-ial slotj through which extends a latentedlJuly *7, 1914.

end 12. On the'outer end of each stud 15 is a winged nut 17 by which theframe 11. after angular adjustment about the shaft 13, can be secured inany such position of adjustment. ()n the outer curved side of the frame11, there isaseeured a-shell or wiper proper 18, which is formed ofmetal or other suitable material having the required degree ofresilience. As shown best in Fig. 1, the shell 18 is of substantiallycylindrical form, that is to say, it is cylindrical excepting for a gap19 which extends longitudinally .rom end to end thereof. By thisconstruction of wiper, different parts of the shell l8,'are capable ofexerting relatively different degrees of pressure on the printingsurface 2, according to whether those parts are directly supported bythe frame 11, or are unsupported by,and-. situated circlunferentiallynearer to or further from, the said frame.' Thus, it will be seen thatby adjusting the shell angularly upon the shaft 13, parts of that shelladjacentto or supported directlyby, the frame i the rotating platecylinder 1,- but this feature constitutes no. part of the presentinvention.

In the arrangement shown in Fig; 3, the wiper 10 is in the form of acomplete oylmder that is to say, unlike that previouslyv dcscribed,=ithas no gap in its cylindrical wall, audits resilience or flexibility isobtained by reducing the thickness of this wall as at the part 20; thepressure this wiper 18 caused to exert upon the plate cylinder-'1,

can be varied by movmg the said wiper, to-

gether vs 1th its shaft 13, bodily nearer to or further from the axis ofthe plate cylinder. In the'construction of wiper. shown in Fig.

4, the security against rotation is obtained by an arm 21 fast to thefranc l1, engaging with a stationary stop 22. In the arrnngement as hereillustrated, DO'PIOVlSlOIl is made for an ularlv adjusting the wipingshell 18, but a will be readily seen'that' vano pose, for egraxnple,

rieus means may be provided for the pur- 1 the 3111121 may be an Igularly adjustable on the shaft 13 relatively to the shell 18, or thearm 21 or stop 22 may be provided with an adjustable set screw.

In the arrangement shown in Fig. 5, the wiper is, or may be, ofsubstantially the same construction as that shown in Figs. 1 and 2, theprincipal feature of difference residing in the fact that, in theexample now under review, the shell 18 is thicker than is the shell c'fthe earlier example, and that the desired degree of flexibility isobtained by I means of a groove 23 which extends throughout the lengthof the shell. The degrce of pressure which thls last described wiper iscaused to exert on the printing sun face 2, can be varied by adjustingthe shell I 18 angularly about the axis of the shaft 13 l either in themanner before described with l reference to Figs. 1 and 2, or otherwise,the 1 pressure decreasing, the nearerthe line of contact between thewiper '10 and surface I 2 approaches the gap 1 In the arrangementillustrated in F ig. 6, there are provided two closely-concentric shells18 and 18*, each subrlantially'like the shell 18 in Fig 1, and of whichthe inner one (18) serves to reinforce the outer one and has gap ofgreater width than has such outer one; if desired, there may be three ormore such shells, instead of the two represented. The adjustmentforyarying the effective pressureexerted by the w1per, may be ,effectedby the means herein described with reference to Fig. 1, -01 in any otherconvenient manner.

In the arrangement illustrated in Fig. 7 the shell 18 is ofsubstantially the construction shown in Fig.- 1, but, as distinguishedfrom the arrangement shown in that figure, the pressure exerted by theshell is varied by longitudinall adjusting a wedge 24 in a directionparallel with the axis of the shaft 13, the said wedge being guided in,and at one edge bearing against, a block or bar 25 fast to the shaft 13,and at the other edge bearing against a bar 26 fast to the inner side oftheshell 18. The adjustment of the wedge 24 may be efi'ected by a screwor any other convenient means.

Having thus described my invention what I claim and desire to secure byLetters Patent of the United States is as follows 1. In a device forwiping an intaglio printing surface, the combination with a shell in theform of part of a cylinder, of a rigid frame to which the shell isattached at one of its longitudinal edges, and ashaft concentric withthe shell and to which the frame is attached.

2. In a device for wiping an inta lio printing surface, the combinationwitE a shell in the form of part of a cylinder, of a. rigid frame towhich the shell is attached at one of its longitudinal edges, a, shaft0on centric with the shell and to which the frame is attached, vary theresistance 0p osed to the ment of the shell toward the shaft.

n a device for wiping an intaglio moveprinting surface, the combinationwith dshell in the form of part of a cylinder, of a rigid frame to whichthe shell is attached at one of its longitudinal edges, a shaftconcentric with the shell, and on which the frame is angularlyvadjustable, and means for effecting such adjustment.

4. In a device for wiping an inta lio printing surface, the combinationwit a shell in the formof part of a cylinder, of a rigid frame to whichthe shell is attached at one of its longitudinal edges, a shaftconcentric with the shell, and onwhich the frame is angularlyadjustable, means for effecting such adjustment, and locking'means forsecuring the frame and shell in adjusted "position.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

Womnnan HAUPT, I'IENRY Hasrnn,

and means adapted to

